The core of the design idea of the hydraulic door closer is to realize the control of the door closing process, so that various functional indicators of the door closing process can be adjusted according to people's needs. The significance of the door closer is not only to automatically close the door, but also to protect the door frame and door body (smooth closing).
Door closers are mainly used in commercial and public buildings, but also in homes. They have many uses, chief among them being to allow doors to close on their own to limit the spread of fire and to ventilate the building.